2-(trifluoromethyl)phenol

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Following the procedure as described in PREPARATION 1C, and making non-critical variations to replace 4-bromo-1-pentyl-1H-indole-2,3-dione with 1-pentyl-1H-indole-2,3-dione, and 1,3-benzodioxol-5-ol with α,α,α-trifluorocresol, the title compound was obtained (46%): 1H NMR (300 MHz, CDCl3) δ 9.75 (s, 1H), 7.50-7.39 (m, 3H), 7.21 (td, 1H), 7.10-7.02 (m, 2H), 6.96 (d, 1H), 4.26 (s, 1H), 3.82-3.59 (m, 2H), 1.77-1.63 (m, 2H), 1.40-1.27 (m, 4H), 0.88 (t, 3H); MS (ES+) m/z 362 (M−17), 402 (M+23).

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 2-trifluoromethylphenol (10 g, 61.7 mmol) in methanol (125 mL) at room temperature was treated with sodium hydroxide (13.87 g, 93 mmol) and stirred until homogeneous. The mixture was cooled in an ice bath and sodium iodide (2.96 g, 74 mmol) was added portionwise followed by the addition of 10% sodium hypochlorite (84 mL, 136 mmol) dropwise, dividing these reagents into 3 portions and adding them sequentially over 30 minutes. The solution was then adjusted to pH 1 by dropwise addition of concentrated hydrochloric acid and poured into brine. The product was extracted into ethyl acetate, concentrated in vacuo and purified by silica gel flash chromatography eluting with ethyl acetate/hexane (0% to 5%) to give the title compound. The mixture was cooled in an ice bath adding them sequentially over 30 minutes The product was extracted into ethyl acetate concentrated in vacuo purified by silica gel flash chromatography eluting with ethyl acetate/hexane (0% to 5%)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-trifluoromethylphenol (20.00 g) was dissolved in chloroform (160 mL), and triethylamine (34.0 mL) and acetic anhydride (12.4 mL) were added to the solution, and then the mixture was stirred at room temperature for 3 hours. The solvent was distilled off under reduced pressure and water was added, and then the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and then dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to obtain the title compound (23.76 g) as a pale yellow oily substance. The solvent was distilled off under reduced pressure and water was added the mixture was extracted with ethyl acetate The organic layer was washed with saturated brine dried over anhydrous sodium sulfate The solvent was distilled off under reduced pressure